How to add prefix to all column name in excel, how to rename all columns

[Nidhi_Gupta1 (Nidhi G)]

@ashokkarale

this also works, however I followed for each approach
can you please check -

I want to add 2nd sheet data for each row of 1st sheet data, cross join

Hi I want to add 2nd sheet data for each row of 1st sheet data, cross join. I tried using join option but it is not full join no of rows and col in both sheet will be dynamic sample ip n op attached, color used for understanding pls help, trying using for each but getting it hardcoded i want dynamic approach